Versions of See prior versions of a law on LawServer 2024 36 CFR 51.60 – How will a new concession contract awarded to an existing concessioner treat a leasehold surrender interest obtained under a prior concession contract? 2023 36 CFR 51.60 – How will a new concession contract awarded to an existing concessioner treat a leasehold surrender interest obtained under a prior concession contract?